超浅埋盾构法隧道施工方案三维有限元分析

3D FEM Analysis of Shield Driven Tunnel with Super Shallow Depth

文章以某水库流域污水通道盾构法隧道施工方案为工程背景,运用MARC大型三维有限元分析系统,对该超浅埋盾构法施工方案进行了三维有限元模拟,分析了不同工况下盾构衬砌和锚杆的受力及变形,并计算出了盾构衬砌的纵向接缝张开量及锚杆轴力。

In this paper, the construction process of shield driven tunnel with super shallow depth is simulated by using 3D FEM MARC code based on sewer tunnel project in a reservoir area, and the displacement of segmental lining and anchor bolt under different situation are obtained. Based on these data, the opening deformation of longitudinal joint and the axial force of anchor bolt are calculated.